Software architecture and design (II) -- Architecture Model

Architectural model

Software architecture involves the high-level structure of software system abstraction , By using decomposition and composition , With architectural style and quality attributes . The software architecture design must meet the main function and performance requirements of the system , And meet the reliability , Extensibility , Non functional requirements such as portability and availability .

Software architecture must describe its components , Its connection , The interaction between them and the deployment configuration of all components .
Software architecture can be defined in many ways -

• UML（ Unified modeling language ） - UML It is one of the object-oriented solutions for software modeling and design .

• Architecture view model （4 + 1 Model view ） - The architecture view model represents the functional and non functional requirements of the software application .

• ADL（ Architecture description language ） - ADL Formally and semantically define the software architecture .

UML

UML Stands for unified modeling language . It is a graphic language for making software blueprints .UML By object management group （OMG） establish .UML 1.0 Draft specification dated 1997 year 1 Submitted to OMG, The standard of software requirement analysis and design documents as the basis of software development .

UML It can be described as a general visual modeling language , In order to visualize , Appoint , Create and document software systems . although UML Usually used to model software systems , But not limited to this . It is also used for non software systems in manufacturing units （ Such as process flow ） Modeling .

These elements can be related in different ways to form a complete UML Picture components , It is called graph . therefore , It is very important to understand different charts to realize real-life knowledge . We have two kinds of graphs , They are further divided into subclasses , Structure diagram and behavior diagram .

chart

The structure diagram represents the static aspect of the system . These static aspects represent those parts of the graph that form the main structure and are therefore stable . These static parts are made up of classes , Interface ,